Merge "Add comment for added restriction." am: b683ca080a am: 73b9744f2c am: 83a5109018

Original change: https://android-review.googlesource.com/c/platform/development/+/1557549

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I1684fd284cfa352e51f109d621dc7ffa5d9ad1fa